Spring-motor.



H. J. KEELEY.

SPRING MOTOR.

APPLICATION FILED 1AN.12,19|1.

1,258,687. Patented Mar. 12, 1918.y

2 SHEETS-SHEET l.

H. J. K'EELEY.

SPRING MOTOR.

APPLICATION FILED 1AII.I2. |911.

1,258,687.` Patented Mar.12,191&

2 SHgETS-SHEET 2.

fin/@27 for a? 2%? 'M7 @Q M7 yM M UNTTED sTATEs PATENT OFFICE..-

HABRY J. XEELEY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR T0 NON-ELECTRIC FAN C0., A CORPORATION 0F ARIZONA.

SPRING-MOTOR.

Specication of Letters Patent.

Patented Mar. '12, 1918.

Application led January 12,1917. Serial No. 141,934.

To all 'whom it may concern:

Be it known that I, HARRY J.' KEELEY, a citizen of the United States of America, and a resident of Los Angeles, county of Los Angeles, and State of California, have invented certain new and useful Improvements in Spring-Motors, of which the following is a specification.

This invention relates to spring motors suitable for driving fans, phonographs, etc. The device is shown in the drawings as applied to a fan.

AThe main objects of the invention are to provide a silent, simple and highly efficient spring motor' to provide an improved arrangement of multiple balanced driving springs; to provide an improved arrangement of speedlincreasing gears for drivin by spring motors; to provide an improve ratchet mechanism for the winding crank of the motor; to provide improved means for transmitting motion to a fan havin an axis at right angles to the driving spin e; and to provide improved means for governing the speed of the fan. L

An illustrative embodiment of this inven tion is shown in the accompanying drawin s, in which:

igure 1 is a vertical sectional view of a motor constructed according to this invention.

Fig. 2 is a horizontal sectional view taken on the line A-A of Fig. 1, and shows the arrangement of gearing.

Fig. 3 is a detail o the winding crank and shaft. h

The design of s ring" motor shown in the drawings is inten ed to provide means suitable for driving fans for use in hospitals,

where a silent mechanism is desirable, and also to provide spring driving means for fans for use in such localities where electric power is not available. It is desirable to have such motors operate for at least an hour or two upon a single winding of the springs, but yet to havethe mechanism sufficiently light to make the device easily portable. It is therefore essential that the mechanical efficiency of the motor be comparatively high, involving small friction losses in the gears and driving mechanism thereof.

A circular bed plate 1 supports the motor and is provided with bosses 2, 3, 4 and 5 in which are j ournaled spindles for supporting the gears by means of which movement is transmitted from the springs to the driven fan. The plate 1 has a depression 6 at the location of said i ears, as indicated by theI member 9 and bearing a ainst a bushing 12vv thereof is a sleeve 13. T is sleeve carries at its upper end-a bevel gear 14 which may be secured to the sleeve by a key 15, as shown in Fig. 1, between the collars 16 and 17.

Meshing with the gear 14 is a pinion 18 fastA on a crank shaft 19 to which 1s secured the Winding crank 20. The crank shaft 19 is journaled in a boss 21 formed in the casing member 22. The member'22 is spaced from the member 1 by an annular part 23 of the casing. Bolts 24 serve to retain the casin members 1, 22 and 23 in the proper fixe relation.

The drivin springs 25 and 26 are coiled around the s eeve 13 and have their inner ends respectively secured to o posite sides of said sleeves, as indicated at 2g and28. The outer ends of the springs are wrapped around posts 29 and 30, respectively located at opposite sides of, and securing in proper fixed relation, the circular or disk-shaped plates 31, 32 and 33 journaled on the sleeve 13. The plate 33 carries fastby means of the screws 3.4, an internal gear ring 35. The internal gear meshes with a pinion 36which is fast to a gear 37 and journaled on spindle 38 extending upwardly from boss 2.

A gear 37 meshes with a pinion 39 fast' to a gear 40 and journaled on spindle 41 eX- tending upwardly from boss 3.l Gear 40 meshes with a pinion-l 42 fast toI a' ear 43 .and journaled on spindle 44.extend1ng upwardly from boss 4. Gear 4 3 meshes with apinion 45 secured to the upright spindle 46 which isjournaled in boss 5 and in the issupported on boss-51 by dowelpins 56'.

web portion 47 of the casing member 22. The fan 48 is fast on shaft 49 which is rotatably and slidably mounted in bushingsY Yand a bearing member 51 integral with member 22 of-the casing. The spindle 46 ,is vconnected to shaft 49 by a lexible shaft or coiled spring 52. This coiled spring serves the double function of transmitting ymotion to the fan at right angles to the driving spindle 46 and to overn or limit the speed of the fan. During rotation of the fan, a certain predetermined wind pressure on the outer sides of the blades serves -to slide the fan and' its shaft 49 inwardly in the bushings 50 and thereby cause the curve of the flexible member 52 to become enlarged after the screw has been, tappedv into the boss vto prevent removal and loss thereof. A

A guard surrounds fan 48. This guard seated in recesses in the boss and secured to a transverse member 57 of the guard. The circular portion 58 yof the guardv is preferably stretched over the head of a screw 59 lextending outwardly from casing member 22. Thescrew therefore serves to maintain the guard rigidly in the desired position.`

To remove the same it is onlynecessary to the circular portion 58 off of screw 59l sna andp lift the guardand thereby 'unseat it from the boss 51. The upper o en portion of casing member 22 is preferab y closed by a semicircular cap 60. ,1 i

Backward rotation ofthe windin crank shaft 19 is prevented by a roller ratc et airangementshown in Fig. 3. The s indle 19 is ,provided with recesses 61 of t e shape shown and 1in which rest'rollers 62. .These rollers dropinto said recess in the winding direction of lrotation of shaft 19 while wedging themselves between the,i inclined vportion 68 pf the recess and the inner surfaceof boss 21 when the shaft attempts to rotate backwardly under the action of springs l25 and 26. `.This roller clutch arrangement provides a very eiicient and silent ratchet. l

In the operation of the device, the springs 25, and 26 are tensionedby rotating crank 20, thus through the pinion 18 and gear 14 rotating the sleeve 13 lto 'which the inner ends of 'springs`25'and 26 are Isecured.

When the crank is released, backward rotation of shaft 19 is prevented by the rollers 62 Wcdging between the4 shaft and the boss -pactlyarranged in a com aratively within which it is journaled. Springs 25 and 26 lare therefore wound together and likewise uncoiled together, rotating the disks 31, 32,`and 33 as a unit and thereby rotating the internal gear 35 which is secured to the disk 33. Internal gear ,35, through the train of pinions and gears between it and `the spindle 46, serves to rotate the latter spindle at a very considerable increase of speed over the rotation of internal gear 35. The fan is thus driven by its connection to spindle 46 through the flexible shaft 52- and is maintained lat some predetermined maximum speed through the governing actionof iiexible shaft 52 which forms amore or less acute curve according tothe wind pressure developed by the fan on the outer sides 'of the blades. t

By the abovev described arrangement of springs 25 and 26 in a pair, each operate together, but are respectively secured to opposite points on the stationary .and driven members, and comparatively owerful action is effected without vibration, since the springs balance each other. Also in the arrangement of gearingwherein the motion is transmitted from an internal gear inwardly f to a central spindle the gearing may be comspace and still effect a considerable lncrease in speed. The flexible shaft 52 serves to small eliminate the usual bevel gears employed for transmitting motion to shafts varranged at right angles, and also acts as' a highly eiicient governor, making -unnecessary any sep- :rate means-for governing the speed of the an.

Although but one specific embodiment of this' invention has been herein shown and described, i,t will be understood that numer# ous details of the construction shown may be altered cig-"omitted without departing from the spirit 'of this invention as defined by the following claims.

I claim: l

1. A ldevice of the clav described, comprising a motor, a shaft driven, thereby, a second shaft at an angle to the irstfnamed shaft, afan secured to said' second shaft,a leXible shaft connecting said two 'first mentioned shafts, and a bearing 4for said second shaft arranged to permit lengthwise movement of saidshaft in the bearings accord ing to the thrust developedlbyI the rotation lof the fan.

2. A, device of the class ,described comprising a motor, a shaft driven thereby, a

fan carried bysaid shaft, bearings for said shaft permittin lengthwise movement of the shaft accor lng to the thrust developed by the'rotation of the fan, and means controlled by-the lengthwise movement 'of said shaft governing the speed of said shaft.

' 3. In a Spring motor, a driving spring and means for winding the same, a shaft arrang-ted to be driven by said spring, a. second sha having-a fan arranged at right angles to said first mentioned shaft and connected therewith by a flexible shaft, bearings for said second shaft arranged therewith topermit said Shaft to slide lengthwise vin Said bearings and thereby alter the arc of said -lexible shaft for the purpose of regulating the speed of said second shaft.

Signed at Los Angeles this 28 day of Feby. 1916.

Y HARRY J. KEELEY. Witnesses:

Lnssm MCFARLAND, Mrs. S. K. MCFARLAND. 

